| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a display device capable of obtaining a buzzer sound of predetermined sound pressure level on a driver's seat, while a buzzer is mounted on the rear surface of a circuit board. <P>SOLUTION: A sound conduction cylinder 61 of a rear cover 6 and a sound conduction cylinder 42 of a casing 4 are provided, surrounding a through hole 31 of a printed board 3 and a through hole 41 of the casing, while a sound radiation hole 51 of a piezoelectric buzzer 5 is linked to an in-cabin space outside a combination meter 1 via a sound conduction path B formed of the through hole 31, the through hole 41, a through hole of a facing board 7, a recessed portion 91 of a projector 9, etc. Consequently, the combination meter 1 can be provided which enables the buzzer sound of predetermined sound pressure level on the driver's seat to be obtained, by projecting a sound wave from the piezoelectric buffer 5, from the front surface of the combination meter 1, while the piezoelectric buzzer 5 is mounted on the rear surface of the printed board 3. <P>COPYRIGHT: (C)2007,JPO&INPIT |
